Razor blade tape measure multi-tool

Abstract

A multi-tool assembly with retractable tape measure, with pivotably mounted, straight edge blade arm, fully sheathed razor blade knife, carpenter's square, protractor and a set of 3 screwdrivers integrated into the housing assembly. The straight edge blade arm and integral razor blade knife, protractor and carpenters square, are fully imbedded into the tape measure housing assembly. The straight edge arm can be manually opened or spring powered to open automatically when a release button is activated, allowing the straight edge blade arm to snap open and lock in place like a switchblade. The set of screwdrivers permanently mounted on the back of the housing assembly are held in the open and closed positions by means of friction and/or a clip mechanism between the screwdriver bit and the housing assembly. The blade arm and screwdrivers pivot open individually, allowing each tool to protrude, and be used independently.

What is claimed is: 
     
       1. A, retractable tape measure, carpenter's square, protractor combination assembly comprising:
 a housing assembly having two opposing side walls, a front wall, a back wall, a top wall and a bottom wall, spatially arranged to form distinct compartments, 
 an extendable and retractable ruled tape assembly coiled into a spool, complete with refraction spring and spool brake assemblies, all contained within the housing assembly, with one end of the ruled tape protruding out of a slot in the front of said housing assembly, with a tape end tip fastened to the end of the ruled tape to prevent the tape from being fully refracted, 
 an, openable and retractable straight edge blade arm with markings for both length and angle measurement relative to the side wall of the housing assembly, pivotably mounted within a compartment formed into the bottom of the housing assembly, allowing the straight edge blade arm to pivot open and protrude out from the housing assembly at varying angles when the blade arm is manually opened, 
 a spring powered locking mechanism which forces the end of a cantilever locking spring against flat surfaces and/or notches in the blade arm, to lock the blade into one of several predetermined positions; one keeps the blade arm locked in the fully closed or fully retracted position, another locks the straight edge blade arm at 90 degrees relative to the side of the housing assembly to form a small carpenter's square and another locks the blade arm in the fully open position. 
 
     
     
       2. A, retractable tape measure, razor blade knife, carpenter's square, protractor combination assembly comprising:
 a housing assembly having two opposing side walls, a front wall, a back wall, a top wall and a bottom wall, spatially arranged to form distinct compartments, 
 an extendable and retractable ruled tape assembly coiled into a spool, complete with retraction spring and spool brake assemblies, all contained within the housing assembly, with one end of the ruled tape protruding out of a slot in the front of said housing assembly; with a tape end tip fastened to the end of the ruled tape to prevent the tape from being fully retracted, 
 an, openable and retractable straight edge blade arm with integral, sliding razor blade and markings for both length and angle measurement relative to the side wall of the housing assembly, pivotably mounted within a compartment formed into the bottom of the housing assembly, allowing the straight edge blade arm to pivot open and protrude out from the housing assembly at varying angles when the blade arm is manually opened, 
 a spring powered locking mechanism which forces the end of a cantilever locking spring against flat surfaces and or notches in the blade arm, to lock the blade into one of several predetermined positions; one keeps the blade arm locked in the fully closed or fully retracted position, another locks the straight edge blade arm at 90 degrees relative to the side of the housing assembly to form a small carpenter's square, and another locks the blade arm in the fully open position, allowing the straight edge blade arm to be used as a cutting tool. 
 
     
     
       3. A, retractable tape measure, spring out carpenter's square and protractor combination assembly comprising:
 a housing assembly having two opposing side walls, a front wall, a back wall, a top wall and a bottom wall, spatially arranged to form distinct compartments, 
 an extendable and retractable ruled tape assembly coiled into a spool, complete with retraction spring and spool brake assemblies, all contained within the housing assembly, with one end of the ruled tape protruding out of a slot in the front of said housing assembly, with a tape end tip fastened to the end of the ruled tape to prevent the tape from being fully retracted, 
 a spring powered, openable and retractable straight edge blade arm, pivotably mounted within a compartment formed into the bottom of the housing assembly, allowing the straight edge blade arm, to automatically pivot open and protrude out from the housing assembly at various angles when the blade arm actuator button is activated, 
 a spring powered blocking pin assembly, released by exerting a force on an actuator button which exerts a force on the linkage and blocking pin assembly, biased to force the blocking pin into the blade arm locking notches to lock the blade into predetermined positions, one to keep the blade arm locked in the closed or fully retracted position, another to lock the straight edge blade arm at 90 degrees relative to the extended tape measure and side of the housing assembly and another to lock the blade arm in the fully open position. 
 
     
     
       4. A retractable tape measure, spring out carpenter's square with integral razor blade knife and protractor combination assembly comprising:
 a housing assembly having two opposing side walls, a front wall, a back wall, a top wall and a bottom wall, spatially arranged to form distinct compartments, 
 an extendable and retractable ruled tape assembly coiled into a spool, complete with retraction spring and spool brake assemblies, all contained within the housing assembly, with one end of the ruled tape protruding out of a slot in the front of said housing assembly, with a tape end tip fastened to the end of the ruled tape to prevent the tape from being fully retracted, 
 a spring powered, openable and retractable straight edge blade arm, with integral sliding razor blade, pivotably mounted within a compartment formed into the bottom of the housing assembly, allowing the straight edge blade arm, to automatically pivot open and protrude out from the housing assembly at varying angles when the blade arm actuator button is activated, 
 a spring powered blocking pin assembly, released by exerting a force on an actuator button which exerts a force on the linkage and blocking pin assembly, biased to force the blocking pin into the blade arm locking notches to lock the blade into predetermined positions, one to keep the blade arm locked in the closed or fully retracted position, another to lock the straight edge blade arm at 90 degrees relative to the extended tape measure and side of the housing assembly and another to lock the blade arm in the fully open position, 
 a razor blade slidably mounted within the straight edge arm so that the razor can be manually slid to fully sheath or partially expose the razor's cutting edge. 
 
     
     
       5. A retractable tape measure and screwdriver set combination assembly comprising:
 a housing assembly having two opposing sides, a front, a back, a top and a bottom, spatially arranged to form distinct compartments, 
 an extendable and retractable ruled tape assembly coiled into a spool, complete with retraction spring and spool brake assemblies, all contained within the housing assembly, with one end of the ruled tape protruding out of a slot in the front of said housing assembly, with a tape end tip fastened to the end of the ruled tape to prevent it from being fully retracted, 
 one or more screw drivers and/or file or saw blades pivotably fastened to the housing assembly to allow each device to individually pivot open and protrude out from housing assembly to be used to drive a screw, pry things, file or saw. 
 
     
     
       6. A combination assembly according to  claims 1 ,  2 ,  3  or  4 , further comprising one or more screw drivers and/or file/saw blades pivotably fastened to the housing assembly to allow each device to individually pivot open and protrude out from the back of the housing assembly to be used to drive a screw, pry things, file or saw.